CA2146917A1 - Plug-type connector for backplane wirings - Google Patents

Plug-type connector for backplane wirings

Info

Publication number
CA2146917A1
CA2146917A1 CA002146917A CA2146917A CA2146917A1 CA 2146917 A1 CA2146917 A1 CA 2146917A1 CA 002146917 A CA002146917 A CA 002146917A CA 2146917 A CA2146917 A CA 2146917A CA 2146917 A1 CA2146917 A1 CA 2146917A1
Authority
CA
Canada
Prior art keywords
plug
backplane
contact
type connector
tubes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002146917A
Other languages
French (fr)
Inventor
Karl Zell
Jurgen Seibold
Peter Seidel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2146917A1 publication Critical patent/CA2146917A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581Shield structure
    • H01R13/6585Shielding material individually surrounding or interposed between mutually spaced contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70Coupling devices
    • H01R12/7082Coupling device supported only by cooperation with PCB
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70Coupling devices
    • H01R12/71Coupling devices for rigid printing circuits or like structures
    • H01R12/72Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/73Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed circuits or like structures

Abstract

ABSTRACT OF THE DISCLOSURE The invention is directed to a plug-type connector for backplane wirings, composed of blade connector and spring clip, wherein the individual contact springs are surrounded by electrically conductive shielding plates that are connected to contactings applied in the intermediate grid both at the backplane side as well as at the assembly side, these contactings being charged with an appropriate potential. In order to obtain a comparatively simple structure of the spring clip, the spring clip (1) is composed of through receptacle chambers into which metallic tubes (4) can be inserted, wherein contact springs (5) extrusion-coated with plastic (12) can be placed into the tubes (4).

Description

- 21~6~17 P E C I F I C A T I O N

TITLE `
PLUG-TYPE CONNECTOR FOR BACXPLANE ~IRINGS

BACRGRO~ND OF THE INVENTION
-:
The present invention is generally directed to a plug-type connector for backplane wirings. More specifically, the present invention relates to such a connector having a blade connector portion fashioned as a rectangular housing open at one side for plugging onto the blades of a wiring backplane and a mated spring clip portion pluggable into the blade connector portion and provided with receptacle chambers and firmly joined to an assembly PC board. ~ ~
Because of ever-increasing data transmission rates with -~`
higher and higher frequencies at the interface formed by a plug-type connector, such connectors must be adapted to meet present and future demands. Particularly, it is necessary to upgrade the plug bodies, which are currently manufactured of plastic, and make them electromagnetically compatible. The plug passage should be smaller and less expensive than a traditional mini-coax.
Up to now, the necessary electromagnetic compatibility was achieved, on the one hand, with the assistance of normal contact r' ns around an active conductor and, on the other hand, by encapsulation of the individual contact passages with shield elements connected to form a potential cage or electromagnetic ~-shield. Such a conventional plug-type connector is disclosed in ;~
European Patent Application 94103192.4 which includes a complicated structure to manufacture.

SUMMARY OF THE INVENTXON
An object of the present invention is to provide a plug-type connector having improved high-frequency properties which meet 21~6gl7 the increased demands. A further object is to provide such a connector having a comparatively simple structure.
These objects are achieved by providing a connector having a spring clip portion housing having continuous receptacle chambers into which metallic tubes can be introduced. Also, the connector has contact springs which are extrusion-coated with plastic and placed into a tube that the middle conductor is centrally seated relative to the tube.
In an embodiment, the blades and springs are arranged parallel in a plurality of rows, and wherein the individual contact springs are surrounded by electrically conductive shielding plates that are connected to contactings applied in an intermediate grid region both at the backplane side as well as at the assembly side, said contactings being charged with an appropriate potential.
An embodiment of the plug-type connector according to the present invention includes plug passages that are significantly smaller and less expensive than traditional mini-coax plug-type connectors, and still meets all current demands with respect to the transmission properties. ;~
An advantage of the plug-type connector of the present invention is that the contactings are formed of contact pins firmly anchored in a press-in manner both in a wiring backplane and in an assembly printed circuit board. The contact pins are respectively impressed into a wire weave in their plugged condition that is attached in recesses provided between ends of the tubes. A very good shield conductance in an intermediate grid is assured in this way.
Another advantage of the present invention is that the ends of the tubes are cut out essentially in the shape of a circular arc at four locations lying diagonally opposite one another, wherein sections that are not cut out serve the purpose of shield . . :~ .

--` 2146917 contacting. The current flow properties are improved by the cut-outs--an eddy formation and, thus, an additional resistance are largely avoided. -Additional features and advantages of the present invention are described in, and will be apparent from, the Detailed Description of the Presently Preferred Embodiments and from the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a longitudinal sectional view through an embodiment of a plug-type connector according to the present invention.
Figure 2 is a plan view of a metallic tube of the spring clip of Figure 1.
Figure 3 is a partial longitudinal section through the plug-type connector of Figure 1 between the receptacle chambers.
Figure 4 is a partial plan view and onto the spring clip of Figure 1 onto the backplane side and a number of partial cross-sections.
Figure 5 is a plan view onto the assembly pc board.

DETAILED DESCRIPTION OF THE
PRESENTLY PREFERRED EMBODIMENTS
It is mainly - ~spring clip 1 of the plug-type connector of the present invention that is shown. The spring clip 1 is ~
located between a wiring backplane 2 of an assembly carrier and ~-an assembly printed circuit board 3 of an assembly. The blade -connector is merely suggested in Figure 1. The spring clip 1 is essentially composed of a plastic body having a plurality of receptacle chambers. The respective chambers proceed through from one side to the other and are separated from one another by chamber partitions 6 of plastic.

.~ .

21~fi91 7 Metallic tubes 4 into which contact springs 5 extrusion-coated with plastic are placed such that the middle conductor is centrally seated relative to the tube 4 can be inserted into the receptacle chambers. As may be seen from Figure 1, the extrusion coat begins at the assembly side and ends in the back spring region in order to fully preserve the spring properties of the contact springs 5. In order to enable a designational insertion of the tubes and simultaneously avoid a short of the front part of the contact springs with the tube, the receptacle chamber can include a spring leg detent 7 for the contact springs at the backplane side. Each spring leg detent 7 simultaneously serves as an entry funnel 8 for the respective ;~
contact blade 14. The metallic tubes 4 can comprise both a round as wPll as a rectangular or square cross-section.
Referring to Figure 2, the contacting of the metallic tubes 4 to a ground or, respectively shielding potential ensues via contacts in the diagonal, i.e. an intermediate grid. In conventional plug-type connectors, this grid amounts to 1.25mm.
The ground or, respectively, shielding potential contacts are firmly anchored in the housing at the assembly side and are implemented in the known press-in technique in the assembly printed circuit board. A corresponding contact is likewise provided in the wiring backplane.
Recesses 13 in the plastic housing of the spring clip 1 are provided at the respective ends of the metallic tubes 4, so that the surfaces of respectively four tubes are accessible for the contacting.
As shown in Figure 3, the contacting to the tubes 4 can ensue in at least three different ways. A first possibility for contacting is comprised therein that a bunch plug 9 is firmly anchored in the printed circuit board in a press-in manner and projects into the recess 13. Another type of contacting is ~1~6917 comprised therein that a wire weave or contact wool is introduced into the recess and respective contact pins are firmly anchored in the board 3 and backplane 2. In the plugged condition, these contact pins 10 project into the wire weave 11 or, respectively, into the contact wool. ;`
A further possibility of contacting is comprised therein that a wire weave or, respectively, a contact wool introduced into the recesses ensues directly onto a contact surface or pads of the printed circuit boards. A press-in procedure is eliminated in such an embodiment. ~-Figure 5 schematically shows a plan view onto an assembly PC
board 3, illustrating the openings 15 for the contact springs 5 and the openings 16 for the shield contacting pins. Figure 4 shows a plan view onto a spring clip 1 at the backplane side as well as a plurality of partial sections in the planes of section A, B and C.
As shown in Figure 2, in order to further reduce the contact resistance at the contact locations for the ground potential or, respectively, shielding conductance, the tube ends are cut out ;~
essentially in the shape of a circular arc at four locations lying diagonally opposite one another in addition to the ~-above-recited measures. The tubes are cut out such that the uncut sections form the limitation of the recess, i.e. serve the purpose of shield contactina. The flo~l behavior of the current is thereby improved. An eddy formation and, thus, an additional ~
resistance are largely avoided by the design measure. It thereby ~;
also becomes possible to bring the transition from tube to pin of the printed circuit boards as close as possible to the grounded potential layer of the boards and thus keep the common line length with the neighboring tube as slight as possible because of a potential reflux into the neighboring tube.
2~469~7 It should be understood that various changes and modifications will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of the present invention and without diminishing its attendant advantages. It is, therefore, intended that such changes and modifications be covered by the appended claims.

Claims (10)

WHAT IS CLAIMED IS:
1. An shielded plug-type connector connectable between a wiring backplane and a printed circuit board, the connector comprising:
a plurality of parallel receptacle chambers arranged in at least one row;
a plurality of metal tubes, one of the tubes being arranged in each receptacle chamber;
a plurality of conductive contact springs, each contact spring having a backplane end insertable onto a contact blade extending from the wiring backplane and an opposite circuit board end being engageably connectable to the printed circuit board, each contact spring being disposed in one of the tubes, an insulative coating surrounding at least a portion of each contact spring to seat the contact springs generally centrally within the respective tubes so that the contact springs are insulated from the tubes; and a plurality of shield contacts charged with a shield voltage, the shield contacts extending from the backplane and the printed circuit board to contact opposite ends of each tube.
2. The plug-type connector according to Claim 1 wherein each receptacle chamber further comprises:
a spring leg detent at the backplane end of each contact spring, each detent being shaped as an entry funnel to guide the blades upon insertion.
3. The plug-type connector according to Claim 1 wherein the shield contacts are bunch plugs secured in the respective backplane and printed circuit board in a press-in manner.
4. The plug-type connector according to Claim 1 wherein the shield contacts are contact pins secured in the respective backplane and printed circuit board in a press-in manner, each contact pin in a plugged condition being inserted into a respective wire weave disposed in respective recesses between the ends of the tubes.
5. The plug-type connector according to Claim 1 wherein the shield contacts are contact pins secured in the respective backplane and printed circuit board in a press-in manner, each contact pin in a plugged condition being inserted into a respective contact wool disposed in respective recesses between the ends of the tubes.
6. The plug-type connector according to Claim 1 wherein the shield contacts at both the backplane side as well as at the printed circuit board side engage directly onto contact areas of the backplane and printed circuit board with wire weaves disposed in respective recesses between the ends of the tubes.
7. The plug-type connector according to Claim 1 wherein the each tube has a round cross-section.
8. The plug-type connector according to Claim 7 wherein each of the tube ends has four arcuate cut out section lying diagonally opposite one another, wherein the tube contacts the shield contacts between the cutouts.
9. The plug-type connector according to Claim 1 wherein each tube has a rectangular cross-section.
10. The plug-type connector according to Claim 9, wherein each of the tube ends has four arcuate cut out section lying diagonally opposite one another, wherein the tube contacts the shield contacts between the cutouts.
CA002146917A 1994-04-14 1995-04-12 Plug-type connector for backplane wirings Abandoned CA2146917A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4412975.0 1994-04-14
DE4412975 1994-04-14

Publications (1)

Publication Number Publication Date
CA2146917A1 true CA2146917A1 (en) 1995-10-15

Family

ID=6515453

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002146917A Abandoned CA2146917A1 (en) 1994-04-14 1995-04-12 Plug-type connector for backplane wirings

Country Status (5)

Country Link
US (1) US5782656A (en)
EP (1) EP0677898B1 (en)
JP (1) JPH07296916A (en)
CA (1) CA2146917A1 (en)
DE (1) DE59504379D1 (en)

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US6869292B2 (en) * 2001-07-31 2005-03-22 Fci Americas Technology, Inc. Modular mezzanine connector
US7811100B2 (en) 2007-07-13 2010-10-12 Fci Americas Technology, Inc. Electrical connector system having a continuous ground at the mating interface thereof
US7635278B2 (en) * 2007-08-30 2009-12-22 Fci Americas Technology, Inc. Mezzanine-type electrical connectors
US8147254B2 (en) * 2007-11-15 2012-04-03 Fci Americas Technology Llc Electrical connector mating guide
US8764464B2 (en) 2008-02-29 2014-07-01 Fci Americas Technology Llc Cross talk reduction for high speed electrical connectors
US8277241B2 (en) * 2008-09-25 2012-10-02 Fci Americas Technology Llc Hermaphroditic electrical connector
US9277649B2 (en) 2009-02-26 2016-03-01 Fci Americas Technology Llc Cross talk reduction for high-speed electrical connectors
US9496620B2 (en) 2013-02-04 2016-11-15 Ubiquiti Networks, Inc. Radio system for long-range high-speed wireless communication
US8836601B2 (en) 2013-02-04 2014-09-16 Ubiquiti Networks, Inc. Dual receiver/transmitter radio devices with choke
US7934952B2 (en) * 2009-07-29 2011-05-03 Ubiquiti Networks Coaxial cable connector system and method
US7927144B2 (en) * 2009-08-10 2011-04-19 3M Innovative Properties Company Electrical connector with interlocking plates
US7850489B1 (en) 2009-08-10 2010-12-14 3M Innovative Properties Company Electrical connector system
US7997933B2 (en) * 2009-08-10 2011-08-16 3M Innovative Properties Company Electrical connector system
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Also Published As

Publication number Publication date
DE59504379D1 (en) 1999-01-14
US5782656A (en) 1998-07-21
EP0677898A3 (en) 1996-09-11
EP0677898B1 (en) 1998-12-02
EP0677898A2 (en) 1995-10-18
JPH07296916A (en) 1995-11-10

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Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 20030414